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Wednesday, 28 October 2026
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Incident database

Hatchet cross-tenant data exposure via missing authorization (CVE-2026-42572)

A missing authorization directive on Hatchet's GET /api/v1/stable/dags/tasks endpoint skipped the tenant-membership check, letting any authenticated user on the instance retrieve task metadata for DAGs belonging to other tenants. The issue is fixed in version 0.83.39.

Disclosed 14 May 2026 · Record updated 1 October 2026

Impact

Users authenticated to any tenant could query another tenant's DAG UUID and receive that tenant's task metadata, enabling cross-tenant information disclosure.

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Sources

  1. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-42572